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RFC 3580, "IEEE 802.1X Remote Authentication Dial In User Service (RADIUS) Usage Guidelines", September 2003

Note: This RFC has been updated by RFC 7268

Source of RFC: INDEPENDENT
See Also: RFC 3580 w/ inline errata

Errata ID: 4491
Status: Verified
Type: Technical
Publication Format(s) : TEXT

Reported By: Nick Lowe
Date Reported: 2015-10-04
Verifier Name: Nevil Brownlee
Date Verified: 2016-03-17

Section 3.20 says:

Called-Station-Id

   For IEEE 802.1X Authenticators, this attribute is used to store the
   bridge or Access Point MAC address in ASCII format (upper case only),
   with octet values separated by a "-".  Example: "00-10-A4-23-19-C0".
   In IEEE 802.11, where the SSID is known, it SHOULD be appended to the
   Access Point MAC address, separated from the MAC address with a ":".
   Example "00-10-A4-23-19-C0:AP1".

It should say:

Called-Station-Id

   For IEEE 802.1X Authenticators, this attribute is used to store the
   bridge MAC address or IEEE 802.11 BSSID (upper case only), with octet
   values separated by a "-".  Example: "00-10-A4-23-19-C0".
   In IEEE 802.11, where the SSID is known, it SHOULD be appended to the
   BSSID, separated from the BSSID with a ":".
   Example "00-10-A4-23-19-C0:AP1".

   The Called-Station-Id MUST be UTF-8 encoded.

Notes:

The RFC was written in the context of an Access Point only offering a
single Basic Service Set, predating and not anticipating Access Points
containing multiple radios or supporting Virtual Access Points. It is
not accurate today and the RFC should originally have stated a Basic
Service Set. It was an error to not state this.

This errata, however, emphatically does not change the original
meaning or intention of the RFC. Basic Service Set was always meant.

Since 802.11 SSIDs may be UTF-8 encoded, the Called-Station-Id MUST always be treated as being UTF-8 encoded in the context of 802.1X to accommodate 802.11 where the SSID has been appended. (This inherently encodes the bridge MAC address or IEEE 802.11 BSSID as ASCII would.)

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